On 2013-08-07 15:53:54 +0000 (+0000), Joshua Harlow wrote: > I agree triple-o will help a lot here although I would disagree > that package rollback is an illusion. I would call it more of a > hard problem instead since nothing is really impossible :) [...]
SCO OpenServer (shudder) for all its issues, actually didn't do a half bad job of it. The Conary package manager takes a similar approach, as have others. RPM/DEB style packages and the corresponding management tools inherit from their parent operating system designs a focus on efficiencies like static footprint and memory consumption which make this a much harder problem (shared libraries, shared interpreters, et cetera). The trend toward every application in its own independent context does make the downgrade problem much more tractable, though you still have issues like un-transforming your data while still capturing any changes which have been applied to it since migration. -- Jeremy Stanley _______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
